package com.ui.zhixiao.config;

import com.github.xiaoymin.knife4j.spring.annotations.EnableKnife4j;
import com.ui.zhixiao.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.*;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import java.util.List;


//@EnableSwagger2
//@EnableKnife4j
@Slf4j
@Configuration
@EnableWebMvc
public class WebMvcConfig implements WebMvcConfigurer{

//extends WebMvcConfigurationSupport
//implements WebMvcConfigurer



    //解决服务器跨域问题
    @Override
    public void addCorsMappings(CorsRegistry registry) {
        //registry.addMapping("/**")
        //        //.allowedOrigins("http://127.0.0.1")
        //        .allowedHeaders("*")
        //        .allowedMethods("*")
        //        .maxAge(30 * 1000)
        //        .allowedOrigins("*");
        registry.addMapping("/**")
                .allowedOrigins("*")
                .allowedMethods("GET","POST","HEAD","PUT","DELETE","OPTIONS")
                .allowCredentials(true)
                .allowedHeaders("*")
                .maxAge(3600);

    }



    /**
     * 设置静态资源映射
     * @param registry
     */
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("开始进行静态资源映射...");
        registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
    }

    /**
     * 扩展mvc框架的消息转换器
     * @param converters
     */
    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
         log.info("扩展消息转换器...");
        //创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        //设置对象转换器，底层使用Jackson将Java对象转为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //将上面的消息转换器对象追加到mvc框架的转换器集合中
        converters.add(0,messageConverter);
    }



}
